XrdApps::JCache: by default don't write JSON summary files

src/XrdApps/XrdClJCachePlugin/README.md

@@ -30,15 +30,16 @@ vector = false
 journal = true
 summary = true
 size = 0
-json = ./
+json =
+
 ```
 ```cache``` points to a local or shared directory where accessed files are stored. This directory has to exist and the configuration path should be terminated with a '/'. 
 
 > [!TIP]
 > By default JCache prints a summary at application exit. If you don't want the summary set ```summary = false```. 
 
 > [!TIP]
-> By default JCache writes a JSON summary file into the current working directory. If you want to change the directory where json summaries are stored change ```json = /tmp/```. If you don't want any json summary file set it to an empty string. The name of the json summary file is ```jcache.env{"XRD_APPNAME"}:"none".{pid}.json```
+> By default JCache does not write a JSON summary.  If you want JSON summaries define a directory whare stored change ```json = /tmp/```. If you don't want any json summary file use the defualt or set it to an empty string. The name of the json summary file is ```jcache.env{"XRD_APPNAME"}:"none".{pid}.json```
 
 > [!NOTE]  
 > The easiest way to verifyt the plug-in functionning is to run with ```XRD_LOGLEVEL=Info``` since the plug-in will provide

src/XrdApps/XrdClJCachePlugin/file/XrdClJCacheFile.cc

@@ -29,7 +29,7 @@
 /*----------------------------------------------------------------------------*/
 
 std::string XrdCl::JCacheFile::sCachePath = "";
-std::string XrdCl::JCacheFile::sJsonPath = "./";
+std::string XrdCl::JCacheFile::sJsonPath = "";
 bool XrdCl::JCacheFile::sEnableJournalCache = true;
 bool XrdCl::JCacheFile::sEnableVectorCache = false;
 bool XrdCl::JCacheFile::sEnableSummary = true;

src/XrdApps/XrdClJCachePlugin/plugin/XrdClJCachePlugin.hh

@@ -60,7 +60,7 @@ public:
       JCacheFile::SetJournal(itj != config->end() ? itj->second == "true"
                                                   : true);
       auto itjson = config->find("json");
-      JCacheFile::SetJsonPath(itjson != config->end() ? itjson->second : "./");
+      JCacheFile::SetJsonPath(itjson != config->end() ? itjson->second : "");
 
       auto its = config->find("summary");
       JCacheFile::SetSummary(its != config->end() ? its->second == "true"